Spike-driving machine



Mar. 1-3; 1923. 1,448,264

- J.. H. DQAK SPIKE DRIVING MACHINE Filed Apr. 18, 1922 2 sheets'sheet 1IN V EN TOR.

M550 H .Uom BY WM M ffitc ATTORNEYS.

Mar; 13, 1923. 1,448,264 J.H.DOAK

PIKE DRIVING MACHINE Filed Apr, 18, 1922 2 sheets-sheet 2 ATTORNEYQPatented Mar. 13, 1923.

UNM'ED STATES reezer JOHN H. DOAK, OF LOS ANGELES, CALIFORNIA.

SPIKE-DRIVING MACHINE.

Application filed. April 18,1922. Serial No. 555,148.

To all whom it may concern:

Be it known that I, JOHN H. DOAK, a citizen of the United States, andresident of Los Angeles, in the county ofLos Angeles, State ofCalifornia, have invented new and useful Improvements in a Spike-DrivingMachine, of which the following is a specification.

This invention relates to a machine for driving spikes in railroad ties,and pertains particularly to'improvements in the type of spike-drivingmachines shown in United States Letters Patent 1,404,841, granted to meJanuary 31, 1922.

In machines of the character referred to, a driver engages the head ofaspike and receives the blow of a hammer transferring it to the spike.To efficiently operate, four drivers are employed, one for each of thespikes being driven in a single tie. For most convenient operation of amachine of the characterreferred to, it is advantageous to have thedrivers for the spikes adjustable as to their positionwith respect toone another and with respect to the frame of the machine. This permitsthe machine'to be accommodated to curves in the track and variations inthe. position ofthe ties. It is the primary object of this inventiontoprovide a machine of the character described, which will have adjustabledrivers. In addition'to the broader features of my invention, there arecertain details of construction, whereby a strong, durable structure issecured, and

' one which is easy to operate.

These objects will'be more fully understood, as will also other objectsand corresponding accomplishments of my invention from the followingdetailed description of a preferred'embodiment thereof. For the purposeof this description, reference is had to the accompanying drawings, inwhich:

Fig. 1 is a side elevation of a fragment of a spike driving machine,only a portion thereof which is material to the present invention beingshown; Fig. 2 is a perspective view of a driver unit; Fig. 3 isa'perspective view of an adjustment plate; Fig. 4 is a:

- Supporting plate 11 hasfour openings, the

fragmentary front elevation showing details of structure for one pair ofthe drivers as seen onthe line 44 of Fig. 5 Fig. 5 1s a planview of thedriver structure, a portion of the supporting plate being broken out atthe center for convenience in illustration, and Fig. 6 1s a perspectiveview showing the detachable connection for the ad j usting shafts.

. Referring more particularly to Fig. 1, a

frame for the machine is indicated generally by A. This frame mayconsist ofbeame,

posts, and braces, being of the same general 7 character as that shownin my Patent 1,404,841 referred to above. As the details thereof form nopart of the present'invention, it will not be further shown or de-SCIlbGd. The frame is supported upon a running gear comprising wheels Bso that it may be moved along the rails. At the front end of the machlneis a platform C upon which the operator of the machine may stand. Thisplatform is conveniently supported by wheels D. .A pivoted hammer isindicated generally by E and may be oper ated by the means disclosed'inmy patent before referred to. As the hammer structure forms no part ofthe present inven. tion, the details and operating mechanism thereforare not shown. The invention resides particularly in the means foradjustin -the drivers. Y

nxtendingtransversely across the frame at the front end adjacent theoperators platform is an opening'bordered by the ends of beams carryingpinionsv 7 and 8. The pinions are journalled upon the ends of the beams;Riding upon the pinions 7 is a rack 9, and riding upon pinions 8 is arack 10. Racks 9 and 10are'secured to the under-face of asupportingplate 11. Engaging rack 10 at the center of the frame is apinion 12, which constitutes a drive i pinion for the supporting plate.Pinion 12' is, fixed to a shaft 14 having a bevel pinion 15 at the otherend,-see-Fig. 1. *Meshing with bevel pinion 15 isfa'bevel pinion 16which is fixed to avertical shaft. 17 having a hand wheel 18 at the topthereof disposed convenient for manipulation by the operator whenstanding upon platform C.' By turning hand wheel 18, the supportingplate 11 may be moved transversely to either side.

tudinal adjusting plate 21. The adjusting plate has lugs 22 extendingfrom the bottom thereof so as to ride in the slots 20. The sides of thesupportin plate at the front and back are providec with ribs 23 and 24.The rib 2t has bracket extension 26 with a hole therein to receive ashaft. At the center, the supporting plate is reduced in width by beingcut away. Formed on the supporting plate 11 in registration with thebracket extensions 26 on each of the adjusting plates are brackets 27having threaded openings therein to receive shafts 28. The shafts arethreaded and are provided with hand wheels 29 at the front adjacent theoperators platform. The shafts have collars 32 disposed in bracket 26,so that longitudinal movement of the shafts will cause the adjustingplates to be moved forwardly and backwardly.

The adjusting plates are maintained against deviatin from a strai htline movement by reason of the lugs 22 riding in slots 20.

Slidably mounted between ribs 23 and 2 1 and resting upon thelongitudinal adjustment plates 21 are the driver units. Each driver unitcomprises a transverse adjustment plate 33 arranged to rest upon anadjusting plate 21 and slidably fit between the ribs. An extension 34 isprovided with a channel 35 having a slot 36 in its face. Disposed inslot channels 35 are collars 37 secured to a threaded shaft 38 by meansof a clevis 30 detachably locked thereto .by a pin 31. The shaft 38extends through the slot 36 in the side of the extension 3 Brackets 30are formed on plate 11 and have threaded openings therein in which thethreaded sections of shafts 38 are disposed.

Fixed to the end of each shaft 38 is ahand 2 wheel 10 for adjusting theshaft. Extending through the driver plate 33 and preferably formedintegral therewith is a shell 41 carrying a striker pin 42 mounted forlongitudina movement therein. A. spring engages the head 4 1 of thedriver pin and normally maintains it in its upper position. Mounted inthe plate adjacent the driver is a spike chute 45 for feeding spikes toposition under the driver pin. The spike chute is made of the characterdisclosed in. Patent 1,404e,84=1 above referred to. The details thereofarenot pertinent to the pres ent invention, and are not shown or described in detail herein.

It is obvious that by operating a hand wheel 40, the position of thecorresponding driver transversely of the frame may be adjusted. Eachdriver can be adjusted independently of the others. The driver units maybe lifted bodily upwardly and removed from the supporting plate 11 sothat the driver and the bottom of the spike machine will clear theground. "When it is desired to lift the drivers upwardly, shafts 38should be detached from the collars 27 by removing the pins 31 from theclevises 30. The driver units may then be lifted clear of the ground, sothat the machine may travel at a reasonable rate of speed from place toplace. The driver units are lifted from the adjustment plates 21. It isobvious that by manipulating hand wheels 29 and 40, the drivers may beadjusted individually without regard to one another. By turning the handwheel'lS the set of drivers as a unit may be moved to one side or theother. Thus amaximum of adjustments is obtained.

What I claim is:

1. In a spike driving machine of the character described having a framesupported upon a running gear, the combination of a supporting plate, aset of drivers movably mounted on said plate, means for each driver toindependently adjust it transversely of said frame, and means for eachdriver to independently adjust it longitudinally of said frame.

2. In a spike driving machine of the character described having a frame,the combination of a set of drivers mounted in said frame, means foreach driver to independently adjust it longitudinally of said frame,means for each driver to independently adjust it transversely of saidframe, and means to adjust the position of the set of drivers as a wholeon said frame.

3. In a spike-driving machine of the character described having a framesupported upon a running gear, the combination of a supporting plate, aset of longitudinal adjusting plates slidably mounted on said supportingplate, a transverse adjustingplate slidably mounted on'each of saidlongitudinal adjusting plates, a driver secured to each longitudinal andtransverse adjusting plate toform a set of drivers, and means toindependently move each of said adjusting plates longitudinally andtransversely of the frame. 3 v

4. In. a spike-driving machine of the character described having a framesupported upon a running gear, the combination of a supporting plate, aset of longitudinal adjusting plates slidably mounted on said supportingplate, a transverse adjusting plate slidably mounted on each of saidlongitudinal adjusting plates, a driver secured to each longitudinal andtransverse adjusting plate to form a set of drivers, means toindependently move each of said adj usting plates longitudinally andtransversely of the frame, and means to adjust the p'ositionof the setof drivers as a whole'on said frame.

5. In a spike-driving machine of thcharacter described having a framesupported upon a running gear, the combination of a supporting plate, aset of longitudinal adjusting plates slidably mounted on said supportingplate, a transverse adjusting plate slidably mounted on each of-saidlongitudinal adjusting plates, a driver secured to each longitudinal andtransverse adjusting plate to form a set of drivers, means toindependently move each ofsaid adjusting plates longitudinally andtransversely of the plate transversely of the frame.

In'witness that I claim the foregoing I l 10 I have hereunto subscribedmy name this 5th day of April, 1922.

JOHN H. noAK.

